Ip Configuration; Setting The Ip Address; Detecting Duplicate Ip Addressing In The Network - Siemens SIMATIC NET CP 442-1 RNA Equipment Manual

Configuration and operation

6.5 IP configuration

6.5 IP configuration
6.5.1

Setting the IP address

You can only assign the CP an IP address in the factory settings status.
To be able to assign an already configured CP a new IP address via SINEC PNI or the STEP 7
function "Edit Ethernet node", you will need to reset it to factory settings.
6.5.2

Detecting duplicate IP addressing in the network

To save you timeconsuming troubleshooting in the network, the CP detects double
addressing in the network.
Behavior during operation (CP in RUN)
If the CP detects double addressing on the network (new node with an IP address that has
already been assigned), a message is generated in the diagnostics buffer and the bus fault
LED lights up.
The CP remains in RUN mode. After the device with the duplicate IP address has been
removed from the network, the bus fault LED goes off automatically.
Behavior when the CP starts up
If duplicate addressing is detected when the CP starts up, the CP remains in STOP. The bus
fault LED is lit and a diagnostics buffer entry is generated.
Restart the CP after the double addressing problem has been eliminated.
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Equipment Manual, 03/2022, C79000-G8976-C318-05
CP 442-1 RNA